Visual revisions for accessible reorder/parsons questions

[sjd210]

Most notably, this PR adds a new useSingleList property to reorder/parsons questions to enable a mode where there is only a "Your answer" list that all items start in, and which must be sorted in place (rather than moving items from "Available items" first). This can only be used for questions where all items are required in the answer (unlike e.g. combined_transformations_r1), and any previous attempts at the question will be displayed only if they already included all items. It should otherwise be fully backwards-compatible.

Other smaller changes:

• Adds a reorder question VRT alongside the existing parsons one. This question uses the useSingleList property.
  • The regression test page will also be updated once both a content cycle has occurred to let the property be used universally, and the playwright tests have been updated to allow both question types to work.
• Removes expansion-layout from Isaac for these questions, and for Ada only when useSingleList is on
• Make list swap button always visible on two-list layout (Parsons indent buttons are still on-hover to preserve space for small items)
• Remove <pre> from Reorder questions to reinstate correct font and wrapping behaviour
• Disable reorder buttons in "Available items" column

Also see isaacphysics/isaac-content-editor#128 and isaacphysics/isaac-api#812

[codecov]

Codecov Report

❌ Patch coverage is 1.72414% with 57 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.18%. Comparing base (e21560d) to head (2ebb12d).
⚠️ Report is 33 commits behind head on main.

Files with missing lines	Patch %	Lines
...rc/app/components/content/IsaacParsonsQuestion.tsx	0.00%	21 Missing ⚠️
...rc/app/components/content/IsaacReorderQuestion.tsx	0.00%	18 Missing ⚠️
...c/app/components/elements/ParsonsDraggableItem.tsx	0.00%	16 Missing ⚠️
src/app/components/content/IsaacQuestion.tsx	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2257      +/-   ##
==========================================
- Coverage   43.22%   43.18%   -0.04%     
==========================================
  Files         603      602       -1     
  Lines       25775    25794      +19     
  Branches     7662     8590     +928     
==========================================
- Hits        11141    11139       -2     
- Misses      14585    14598      +13     
- Partials       49       57       +8     

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